Tube frame for weaving



Mar. 3, 1925. 7 1,528,611

E. F. HATHAWAY TUBE FRAME FOR WEAVING Original Filed March v, 1925 Patented Mar. 3, 1925.

UNITED STATES i 1,528,611 PATENT OFFICE.

EDGAR F. HATHAWAY, OF WELLESLEY, MASSACHUSETTS, ASSIGNOR TO SHAWMUT ENGINEERING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TUBE FRAME FOR- WEAVING.

Application filed March 7, 1923, Serial- No. 623,527.

To all whom it may concern:

Be it known that I, EDGAR F. HATHA- WAY, a citizen of the United. States, and resident of Wellesley, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Tube Frames 1 for Weaving, of which the following is a specification.

This invention relates to tubeframes such as are used in weaving tufted pile fabrics like Axminster carpets, and is intended to provide a cheap, simple and effective construction affording rigidity and strength without undue weight while producing a very durable tube support. The construc tion also lends itself readily to easy and convenient replacement of parts without sacrificing the desired stiffness and strength.

Among the features characterizing the present invention is the construction by which the suspension hangers are secured to the carrier bar, also the construction and arrangement of the cooperating suspension members themselves as well as the construction by which the desired strength without undue increase in weight is obtained.

These and other features will be particularly explained in the following specification and will be defined in the claims forming part thereof.

In the drawings, I have illustrated concrete embodiments of the principles of this invention, in which Figure 1 is a front elevation of one end of a tube frame embracing the invention with the carrier bar shown'in section.

- Figures 2 and 3 are side elevations viewed from opposite sides of a suspension hanger.

Figure 4 is a central sectional view corresponding to the elevation of Fig. 1.

Figure 5 is a bottom plan view of one end of the tube frame.

Figure 6 is a detail showing in vertical section one end of the carrier bar.

Figure 7 is a cross sectional view of the composite hanger. I

In the practice of this invention according to the illustration in the drawings, I employ a longitudinal tubular carrier bar 1, to the front face of which the individual tuft tubes are attached for support in any suitable or known manner. The end portions of the top and bottom walls of the Renewed December 13, i 1924.

carrier bar are countersunk or depressed for some distance to form a trough or groove for receiving the arms 3 and 4 of a hanger-attaching member whose intermediate portion 5 extends across or closes the open end of thecarrier bar to which the attaching member is securely and rigidly fastened by any suitable fastening means, such as the transverse screw. bolts 6 which pass through the arm 8 and the top and bottom walls of the carrier bar and are tapped into the arm 4. so as to securely and rigidly clamp the attaching member to the carrier bar.

The suspension hanger as shown in Figures 1 to 5 comprises an inner arm 8 projecting vertically upward and provided at its upper end with a bearing recess 8 to receive the yarn spool journal and also provided at an intermediate portion with a struck-out or upset portion 8 forming a recess for the reception of a hook-actuating spring 9. l

The outer member 12 of the hanger is secured firmly to the outer face of the member 8 and is formed with an offset upwardly projecting tongue 12 for penetrating a link of the carrier chain, not shown; The suspension arm 12 has its laterally offset portion internally recessed or cut away as shown at 12, to allow the passage through this upset portion of the suspension hook 10. This interior recess 12 is continued downward nearly to the lower end of said arm 12, that is, below the lower or fulcral end of the hook 10 in order that the hook may lie flat against the arm 8 with its loop 1O at its upper end and a recess 10 registering with the bearing recess 8 so that the protruding journal of the spool may not interfere with the complete inward swing of the suspension hook. The lower end of the hook is bent into a fulcral hook or loop 10 in order to form a supporting pivotal engagement with the rigid portion of the tube frame structure. This offset fulcral hook or eye 10 projects through the aperture or slot formed in the middle portion of the suspension arm 12, and also through a suitable opening at 5 in the middle portion of the hanger-attaching element suiiiciently to permit the insertion of a fulcral or pivot pin 14 which is held against endwise movement when in operaive position by the front and rear walls of the tubular carrier bar.

As shown in Figure 1, the middle portion 5 of the attaching element is depressed on either side of the middle aperture 5 to form a fulcral recess 5 for receiving the opposite end portions of said pivot pin.

The parallel suspension members 12 and 8 may be secured together in any suitable manner as by welding and the attaching member comprising the parts 3, l, 5 is then rigidly secured against the inner face of the arm 8 by means of rivets or any suitable fastening means. This construction permits the use of sheet metal plates for the hangers of comparatively light weight yet affords a very stiff and rigid construction. The suspension hook 10 is then inserted through the aperture provided for that purpose and the pivot pin inserted in its bearing recesses to form a fulcral support for the suspension hook which is made of sufficiently rigid material to resist service strains but which is allowed to swing to and fro without distortion because of its pivotal connection. The assembled hanger elements with the attaching members rigidly secured thereto, as above described, are then applied to the carrier bar by telescoping the arms or wings 3 and 4 over the opposite walls of the carrier bar and the fastening screws 6 are inserted to firmly secure the hanger to the carrier bar.

It will be seen that the arms 8 and 12 of the hanger strongly reenforce each other, while the construction and arrangement by which they are rigidly but detachably secured to the carrier bar adapts the whole structure to the quick and convenient replacement of parts. The wide flush outer bearing face which the hanger presents to the transfer mechanism is secured without sacrifice of strength or convenience in operation.

What I claim is:

1. In a tube frame for tuft weaving, the combination of a longitudinal, tubular carrier bar for supporting the tuft tubes and having at its end portion opposite walls inwardly pressed to form longitudinal exterior recesses extending inwardly from the end edges of said walls, a suspension hanger, a U-shaped attaching bracket secured to the inside end portion of sa d hanger with its inwardly projecting parallel arms projecting inside said longitudinal recess and eX- ternally embracing the bar, and means for detachably securing the arms of said attaching bracket to the inwardly pressed end portions of the tubularbar, substantially as described.

2. In a tube frame for weaving, thecombination of a longitudinal carrier bar provided at its ends ith external recesses on opposite sides of the bar and suspension hangers therefor comprising vertical arms provided with lateral projecting attaching members spaced to fit inside said recesses to prevent twisting movement of the hangers in relation to the carrier bar, and means for detachably but rigidly securing the attaching members to the carrier bar, substantially as described.

3. in a tube frame for weaving, the combination with a carrier bar, suspension hangers rigidly secured to the ends of said carrier-bar each hanger comprising laminated arms, the inner one affording a bearing for a yarn spool and the outer one provided with an interior elongated aperture, and a sprii'ig-actuated suspension hook arm flexibly connected with said h'angerin position to lie flush with the outer faceof said laminated portion of the hanger when pressed from normal operative position, substantially as described.

4-. In a tube frame for tuft 'weaving the combination with a longitudinal tubular carrier-bar, of a suspension hanger embracing an inner spool bearing arm and an outer chain-engaging arm secured together face to face for mutual reinforcement, said arms being formed with registering openings for the reception of a hook latch, and being provided with upper and lower inwardly projecting attaching wings arranged to form overlapping engagement respectively with the top and bottom walls of the carrierbar to which they are detachably secured, and a rigid chain-engaging spring-actuated hook latch provided with an offset fulcral portion inserted in said openings for fulcral support.

5. A suspension hanger for a tuft tube frame embracing a vertical arm of double thickness at its side edges provided with porting means mounted between the attaching member and the adjacent portion of the rigid arm substantially as described.

7. A hanger for a tuft tube frame embracing a rigid suspender provided with offset chain-engaging and spool-bearing members, a cooperating chain-engaging suspension hook mounted to be movable between said two ofi'set members and provided with an aperture aligned with the spool bearing to avoid abutting against the journal of a spool when moved inwardly toward the spool bearing member, substantially as described.

8. A tube frame hanger comprising spoolsupporting and chain-engaging members secured face to face to reinforce each other and having their upper ends ofiset for engagement with the spool journal and with a carrier chain respectively, a chain-engaging suspension hook pivotally connected to said hanger, a spring mounted in a recess formed in said hanger to press the hook outwardly into chain-engaging position, an means for attaching the hanger to a carrier bar, substantially as described.

9. An end bracket for a tube frame em bracing in its construction a rigid laminated suspension hanger comprising inner and outer arms secured face to face for mutual reinforcement, the outer arm being provided with an offset upward chain-engaging extension, the inner arm being provided with a spool-supporting bearing recess, a rigid spring actuated hook latch whose fulcral portion is inserted through registering apertures in the two arms for fulcral support, and bar-attaching means embracing inwardly projecting Wings disposed to engage opposed walls of a tube frame carrier-bar and be detachably secured thereto.

In witness whereof, I have subscribed the above specification.

EDGAR F. HATHAVVAY. 

